(19)
(11) EP 1 521 136 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
09.10.2013 Bulletin 2013/41

(43) Date of publication A2:
06.04.2005 Bulletin 2005/14

(21) Application number: 04023359.5

(22) Date of filing: 30.09.2004
(51) International Patent Classification (IPC): 
G03G 15/00(2006.01)
(84) Designated Contracting States:
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IT LI LU MC NL PL PT RO SE SI SK TR
Designated Extension States:
AL HR LT LV MK

(30) Priority: 03.10.2003 JP 2003346278
15.09.2004 JP 2004269028

(71) Applicant: CANON KABUSHIKI KAISHA
Tokyo (JP)

(72) Inventors:
  • Akita, Masanori
    Tokyo (JP)
  • Kokubo, Yoshitaka
    Tokyo (JP)
  • Okada, Tomoyuki
    Tokyo (JP)
  • Umeda, Kengo
    Tokyo (JP)
  • Aoki, Masaru
    Tokyo (JP)

(74) Representative: TBK 
Bavariaring 4-6
80336 München
80336 München (DE)

   


(54) Recording material discrimination device, image forming apparatus and method therefor


(57) The invention is objected to perform fixing in an optimum fixing condition even with various kinds of recording materials or the like while improving usability by discriminating the kinds of recording materials. An image reading sensor 123 includes a reflective LED 301, a transmissive LED 303 disposed on the opposite side relative to a recording material 304 for detecting the transmitted amount of light, a CMOS area sensor 211, and an imaging lens 1113. The light from the reflective LED 301 as a light source is applied toward the surface of the recording material 304, and the reflected light from the recording material 304 is collected via the lens 303 and an image is formed on the CMOS area sensor 211. The LED 301 is disposed so as to apply LED light to the surface of the recording material 304 diagonally at a predetermined angle.







Search report















Search report